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Old 07-01-2019, 08:38 PM   #1
ibinyth
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Th350 broken vacuum modulator bracket tab



Driving down the road after a fluid change all of the sudden I'm spewing fluid all over the road. After a $60 towing bill and time to get around to examining I find my issue. Vacuum modulator, and bracket both missing. Assuming the bolt bracked out however, the tab apparently broke at some point in the trucks life and was simply bonded back on. What's the best possible way to reattach it as its simply a 1/4 wide piece of threads and I plan on doing a 700r4 swap in a few months.
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Old 07-01-2019, 08:39 PM   #2
ibinyth
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Re: Th350 broken vacuum modulator bracket tab

http://imgur.com/gallery/p3FPoUr
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Old 07-01-2019, 08:44 PM   #3
ibinyth
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Re: Th350 broken vacuum modulator bracket tab

NEVERMIND

Think I figured it out... When I did the fluid change someone had wire wrapped around the crossmember. Me not thinking anything of it as it didn't look to be doing much I cut it. Guess I figured out its purpose after all
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Old 07-02-2019, 01:50 PM   #4
tdangle
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Re: Th350 broken vacuum modulator bracket tab

Always interesting how these trucks were "fixed" throughout the years. Never get away with it on newer cars/trucks.
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Old 07-07-2019, 03:50 PM   #5
sKnNyPpY
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Re: Th350 broken vacuum modulator bracket tab

Longer bracket bolts to the extension housing. https://www.transmissionpartsusa.com...-00047307b.htm
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71 GMC 1500 Super Custom LWB
350/350 AC(replaced w/vintage air)/PS/PB
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Last edited by sKnNyPpY; 07-07-2019 at 04:20 PM.
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Old 07-07-2019, 04:05 PM   #6
Ironangel
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Re: Th350 broken vacuum modulator bracket tab

Quote:
Originally Posted by sKnNyPpY View Post
Longer bracket bolts to bell housing. https://www.transmissionpartsusa.com...-00047307b.htm
Nice find! Bolts to the "Extension Housing"
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Old 07-07-2019, 04:22 PM   #7
sKnNyPpY
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Re: Th350 broken vacuum modulator bracket tab

oops, edited. I was working from memory and it was written right there in the link! Part works great BTW, for some reason I still had to use multiple o-rings on the modulator to keep from leaking/sucking air though.
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71 GMC 1500 Super Custom LWB
350/350 AC(replaced w/vintage air)/PS/PB
2.5 CPP Spindle, 1" CPP Drop Spring, CPP Front and Rear Sway Bars/DJM Flip, new General Spring KC 5 spring pack, HEI /IntReg Alt
20x8.5 OldSkools 5" BS, 275/45 Falkens
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